okay the ^-1 means the inverse of it.

and when i write 'pi' its supposed to be the pi symbol i just couldnt find it.

please help i need to understand how to do these i learn very well by example and i need answers to study these for finals

1) sin^-1(-1/2)

2)csc^-1(-√2)

3)cot^-1 √3

4)cos^-1(-1)

5)sec^-1(-√2)

6)sin^-1(cos pi/6)

7)cos^-1(tan pi/4)

8)sin[tan^-1 (-1)]

9)tan^-1(sec pi)

10)cos(sec^-1 √2)

11)sec^-1(cot 3pi/4)

12)csc^-1(cos 5pi/6)

need the answers in radians pleeeeeease